BUG: Delete multi-linked comment

[wmoore]

If I add a comment to several images at once, and then try to delete the comment from one of the images I get:

java.lang.Exception: org.openmicroscopy.shoola.env.data.DSAccessException: Cannot access data. 
Cannot delete the object.
	at org.openmicroscopy.shoola.env.data.OMEROGateway.handleException(OMEROGateway.java:875)
	at org.openmicroscopy.shoola.env.data.OMEROGateway.deleteObjects(OMEROGateway.java:2849)
	at org.openmicroscopy.shoola.env.data.OmeroMetadataServiceImpl.saveData(OmeroMetadataServiceImpl.java:1011)
	at org.openmicroscopy.shoola.env.data.views.calls.StructuredAnnotationSaver$1.doCall(StructuredAnnotationSaver.java:90)
	at org.openmicroscopy.shoola.env.data.views.BatchCall.doStep(BatchCall.java:144)
	at org.openmicroscopy.shoola.util.concur.tasks.CompositeTask.doStep(CompositeTask.java:226)
	at org.openmicroscopy.shoola.env.data.views.CompositeBatchCall.doStep(CompositeBatchCall.java:126)
	at org.openmicroscopy.shoola.util.concur.tasks.ExecCommand.exec(ExecCommand.java:165)
	at org.openmicroscopy.shoola.util.concur.tasks.ExecCommand.run(ExecCommand.java:274)
	at org.openmicroscopy.shoola.util.concur.tasks.AsyncProcessor$Runner.run(AsyncProcessor.java:91)
	at java.lang.Thread.run(Thread.java:613)
Caused by: omero.ValidationException
    serverStackTrace = "ome.conditions.ValidationException: could not delete: [ome.model.annotations.CommentAnnotation#3051]; SQL [delete from annotation where id=?]; constraint [fkimageannotationlink_child_annotation]; nested exception is org.hibernate.exception.ConstraintViolationException: could not delete: [ome.model.annotations.CommentAnnotation#3051]
                        	at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:637)
                        	at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412)
                        	at org.springframework.orm.hibernate3.HibernateInterceptor.invoke(HibernateInterceptor.java:117)
                        	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

[jburel]

The comment should probably not have been shared in the first place.

[jburel <j.burel@…>]

(In [9dbe8bffc64fd649eac686fa1f45705bc7ecc31f/ome.git] on branch develop) Fix removal/delete when a comment is shared (close #5276)